Emery-wheel dresser



' -UN1T131) STATES For WISCONSIN Patented Sept. 9, 1930 PATENT oFFlcE SAMUEI1`K`FRYCKBERG, OF PORT WASHINGTON, WISCONSIN, ASSIGNOR TO SIMPLICITY MANUFACTURING COMPANY, OE` PORT WASHINGTON, WISCONSIN'7 A CORPORATION EMERY-WI-IEEL DRESSER Application mea August 3o, 1929. Serin No. 389,445.

This invention relates to a grinding wheel dresser. f

The dresser is particularly adapted for truing the grinding wheels of grinding ma chines in which the wheel is movable axially or which has a carriage which is movable axially of the wheel.

An object of the invention is to provide a compact and eflicient grinding wheel dresser.

Another object is tovprovide a. grinding wheel dresser which may be secured to a support arranged in close proximity to the grinding wheel to be dressed.

Another object is to provide a grinding wheel dresser which may be readily and economically manufactured.

According to the invention, the screw which clamps the dresser to a support also forms a part of the feeding mechanism.

An opening is preferably provided to permit inspection of the work when the dresser is clamped to a support which is arranged close to the wheel to be dressed.

A grinding wheel dresser embodying the invention is shown in the accompanying drawing in which the views are as follows :A

Fig. 1 is a top plan view. i

Fig. 2 is a section on the line 2-2 of Fig. 3.

Fig. 3 is a side elevation of the dresser, showing the same arranged in positi-on upon a grinding machine which is shown in central section.

Only a part of the grinding machine has been illustrated as the same is similar to that shown in my copending application, Serial No. 366,480, nieu May 27,1929.

rThe machine has a grinding wheel 1 secured by washers 2 to a spindle 3 which is journalled in a bearing fl.

The grinding wheel is rotated and moved axially by mechanism (not shown) carried by the frame 5 which has an opening 6 in theV bottom thereof, through which the wheel 1 is advanced to grind cylinders and the like, and a lateral opening 7 to provide access to n the grinding tool and the work.

The grinding wheel dresser has a guide 8 which is provided at the forward end thereof with a lug 9 to engage one side of a support, such as the frame 5, and at the rear end thereof with a lug 10.

A screw 11 is threaded through the lug'l() and provided at the rear end thereof with a handle 12 by means of which the same may be rotated to bring the forward end thereof into engagement with the opposite side of the support or frame 5 and clamp the guide 8 thereto.

A sleeve or feed nut 13 is threaded on the screw 11 and preferably provided with a counter-bore 111 to accommodate the unthreaded part 15 of the screw 11.

The guide 8 has a bore 16 to receive'the stem 17 of vav dressing tool 18 which carries an abrading element 19, such as a diamond, at the forward end thereof.

rhe dressing tool 18`has a feed block 2O arranged at the rear of the stem 17 and provided with a convex lower end 21 to lit into a erably carried by the stem and secured there-- on by a bolt 23 which is threaded in the block and engages the bottom of a groove 2t formed in the stem, so that the stem may be rotatedto bring different faces of the abrading element 19 into engagement with the wheel 1.

The guide 8 has a slit 25 extending the length thereof and intersecting the bore 16 to permit the stem 17 to be clamped therein by a bolt 26 which extends through a lug 27 and is threaded into the base 28 of the guide.

The forward end 29 of the guide 8 slopes rearwardly from approximately the centerline of the bore 16 and is provided with a semi-circular opening 30 to expose the abrading element 19 when the same is retracted to ti its rearmost operative position.

In dressing the wheel of a grinding inachine, such as that shown in Fig. 3, the guide 8 is extended through the opening 7 and clamped to the frame 5 bv turning the screw l i The sleeve 13 prevents the dressing tool 181 l ici Y abradingelementlQ until all parts ofthe pefrom backingaway fromfthe work" but the bolt 26 and the slit 25 are provided so that the stem 17 may be firmly clamped in the guide 8 and the dressing tool prevented from vibratma.

a3The grinding wheel is moved across the port, a dressing tool carried by said guide, f and a feed nut threaded on said screw and 'y connected to saidtool to move'the same in positions in said guide.

said guide. n l

2. A grinding wheel dresser coinprisinga guide, a screw to clamp said guide to a support, a dressing tool carried hy said guide, a feed iiut threaded on said screwV and connected to said tool to move the same in said guide, and a bolt to clampsaid tool `in selected 'to clamp said guide.v

guide having a cylindrical bore and spaced lugs arranged at an angle thereto, a screw threaded through one of said lugs to clamp said guide` to a support, a sleeve'threaded on said screw and provided'with a groove in the periphery thereof, a dressing tool arranged in saidbore to :slide therein and' having a feed v block fixed thereon and provided with a concave surface to engage saidgroove, and a bolt said :tool in selected positions -in 9. A grinding wheel dresserftcomprising a guide Shaving a hore'therein andan'opening in the forward end thereof intersecting said hor'eya -screwltofclamp said guide to a lsupport, a dressing tool arranged in said bore,

and a feed nut threaded-on said screw andv ,Y

connected to said tool to move the same in said guide. 'In witness whereof, Ijhavehereunto subscribed my name;

SAMUEL FRYCKBTERG.

3. A grinding wheel dresser comprising a guide, a screw to clamp 'said guide to a support, a cylindrical tool stem arrangediii said guide to slide therein., a diamond carried by said stem, and a feed nut threaded on said screw and connected topsaid stein to movek the same in said guide. r

4. A grinding wheel dresser comprising a guide, a screw toclamp said guide to a support, a sleeve threaded onfsaid screw and p rovided with a groove in the periphery thereof, and a dressing tool arranged in said guide n to slide therein and having apart thereof engaging said groove. Y

5. A grinding wheel dresser comprising a guide, a screw to clamp `Said guide to a support, a sleeve threaded on saidxscrew r and provided with a groove in theperiphery thereof, a dressing tool arranged in 'said guide to slide therein and having a partgthereof en` gaging said groove, and a holt to clamp said Y, p

tooly inv selected positions in said guide.V

6. A grinding wheel vdresser comprising a guide, a screw to clamp said guide to asiipport, a sleeve threaded on said screw, a tool stem arranged in said guide to slide therein, an ahrading element carried by said stem,

anda feed block fixed to said stem and conil v nected to said sleeve to he moved therehy.

7. A grinding wheel dresser comprising a guide, a screw to clamp said guide to a sup-` providedl with 'a groove in the periphery thereof, a tool stem arranged in said guide to slide therein, an ahrading element carried by port, ak sleeve threaded on saidscrew and q said stem, and a feed block liXedto said stem and havingacoiicave surface engaging said groove.

8. A grindingwheel dresser comprising a` loo 

